Oceanographic Sampling: Shelagh 2017


Summary

The Shelagh is conducting opportunistic oceanographic sampling as it surveys the Gulf of St Lawrence for right whales. This document provides an overview of the preliminary CTD data.

Report last updated:
2017-08-14 10:00:08

Days with samples (n = 9):
03-Jul-2017, 04-Jul-2017, 05-Jul-2017, 08-Jul-2017, 02-Aug-2017, 08-Aug-2017, 10-Aug-2017, 11-Aug-2017, 12-Aug-2017

Sample Types:

  • CTD (n = 16):
    Profiles of temperature, salinity, and depth made with a SBE37 CTD. These were made in advance of every tow. The CTD was also left logging during the tow to record the depth-time series of the net.

  • Net (n = 26):
    Vertical zooplankton tows (to either full or half depth) made with a 200 micron, 3/4 m diameter ring net. Samples preserved in formalin with a subsample flash frozen in liquid nitrogen [where possible]

  • HAB (n = 2):
    Filter ~2 L of surface water through 20 micron filter and preserved in formalin to assess presence of harmful algae.


Maps

Sample locations

Whale sightings

*These whale sightings were obtained from the running DFO list of sightings from a variety of sources including NOAA, DFO, and other opportunistic surveys. For more details, see the interactive sightings map here

Sampling locations and sightings


CTD data

CTD 01

CTD 02

CTD 03

CTD 04

CTD 05

CTD 06

CTD 07

CTD 08

CTD 09

CTD 10

CTD 11

CTD 12

CTD 13

CTD 14

CTD 15

CTD 16


Master data sheet

Please excuse the slightly bizarre format of the data, but I decided to organize the data in this way to keep everything (i.e. all sample types) in one place. Each CTD cast is distinguished by having ‘CTD’ in the ID column, while each biological sample solely has a number. The ‘type’ column refers to the type of sampling done, where ‘CTD’ indicates a CTD cast, ‘VRT’ is a vertical net haul, and ‘BUK’ is a bucket sample for HAB analysis. The ‘samples’ column refers to what samples were taken, where ‘Zoop’ is a bulk zooplankton sample (preserved in formalin), ‘Cryo’ is a sub-sample of zooplankton that is flash frozen in liquid nitrogen, and ‘HAB’ is a filtered surface sample. The ‘sticker_id’ column is the number of the sticker that was put on the sample bottle. Finally, the ‘comments’ column contains the identifier of the associated comment. Click on the comments tab to navigate to a comment for a particular sample.

Data table

Comments